Havana, Cuba (CNN) -- A Cuban woman known for writing critical blogs about life in the communist nation said she was briefly detained by agents Friday in the capital.

Yoani Sanchez told CNN in a telephone interview that she and fellow blogger, Orlando Luis Pardo, were forced into a black Chinese-made car and assaulted by three state security agents on her way to a march against violence Friday evening.

Sanchez gained international attention for her blog "Generation Y," which gets about 1 million hits a month.